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Página 1 desde 188 resultados
Serum protein acidic and rich in cysteine (SPARC) as a prognostic marker in soft tissue sarcomas.
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BACKGROUND
Serum protein acidic and rich in cysteine (SPARC) is a matricellular secreted glycoprotein that performs several cellular functions and has been implicated in tumorigenesis in a variety of tumor types. The chemotherapeutic agent nanoparticle albumin-encapsulated (NAB)-paclitaxel has been
The specificities of Kaposi's sarcoma-associated herpesvirus-encoded E3 ubiquitin ligases are determined by the positions of lysine or cysteine residues within the intracytoplasmic domains of their targets.
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Kaposi's sarcoma-associated herpesvirus encodes two homologous E3 ligases, MIR1 and MIR2, that mediate the ubiquitination and subsequent downregulation of several cell surface proteins, and in particular major histocompatibility complex class I (MHC-I) molecules. We have previously shown that, in
The spacing between cysteines two and three of the LDL-A module of Tva is important for subgroup A avian sarcoma and leukosis virus entry.
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Rong et al. have demonstrated previously that with a few substitutions, the fourth repeat of human low-density lipoprotein (hLDL-A4) receptor can functionally replace the LDL-A module of Tva, the cellular receptor for subgroup A avian sarcoma and leukosis virus (ASLV-A), in viral entry (L. Rong, K.
Cysteine proteinase inhibitor in the ascitic fluid of sarcoma 180 tumor-bearing mice is a low molecular weight kininogen. Partial NH2- and COOH-terminal sequences and susceptibility to various glandular kallikreins.
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It has been proposed that a cysteine proteinase inhibitor (CPI) found in the ascitic fluid of Sarcoma 180 tumor-bearing mice is a kind of kininogen (Itoh, N., Yokota, S., Takagishi, U., Hatta, A., and Okamaoto, H. (1987) Cancer Res. 47, 5560-5565). The first 40 NH2-terminal residues and 54 residues
Importance of cysteines in the LDLR-related domain of the subgroup A avian leukosis and sarcoma virus receptor for viral entry.
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The extracellular domain of the subgroup A avian sarcoma and leukemia virus (ALSV-A) receptor contains a region that is related in sequence to the ligand-binding motifs of the low-density lipoprotein receptor (LDLR). This domain contains six cysteines that are highly conserved between different
Critical role for the cysteines flanking the internal fusion peptide of avian sarcoma/leukosis virus envelope glycoprotein.
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The transmembrane subunit (TM) of the envelope glycoprotein (Env) of the oncovirus avian sarcoma/leukosis virus (ASLV) contains an internal fusion peptide flanked by two cysteines (C9 and C45). These cysteines, as well as an analogous pair in the Ebola virus GP glycoprotein, are predicted to be
Cysteines flanking the internal fusion peptide are required for the avian sarcoma/leukosis virus glycoprotein to mediate the lipid mixing stage of fusion with high efficiency.
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We previously showed that the cysteines flanking the internal fusion peptide of the avian sarcoma/leukosis virus subtype A (ASLV-A) Env (EnvA) are important for infectivity and cell-cell fusion. Here we define the stage of fusion at which the cysteines are required. The flanking cysteines are
Inhibitory properties of low molecular mass cysteine proteinase inhibitors from human sarcoma.
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Elevated activities of cysteine proteinases such as cathepsins B and L and cancer procoagulant have been linked to tumor malignancy. In the present study we examined the hypothesis that these elevated activities could be due to impaired regulation by the endogenous low molecular mass cysteine
A charged second-site mutation in the fusion peptide rescues replication of a mutant avian sarcoma and leukosis virus lacking critical cysteine residues flanking the internal fusion domain.
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The entry process of the avian sarcoma and leukosis virus (ASLV) family of retroviruses requires first a specific interaction between the viral surface (SU) glycoproteins and a receptor on the cell surface at a neutral pH, triggering conformational changes in the viral SU and transmembrane (TM)
Harvey murine sarcoma virus p21 ras protein: biological and biochemical significance of the cysteine nearest the carboxy terminus.
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Previous studies of premature chain termination mutants and in frame deletion mutants of the p21 ras transforming protein encoded by the transforming gene of Harvey murine sarcoma virus (Ha-MuSV) have suggested that the C terminus is required for cellular transformation, lipid binding, and membrane
Analysis of the subgroup A avian sarcoma and leukosis virus receptor: the 40-residue, cysteine-rich, low-density lipoprotein receptor repeat motif of Tva is sufficient to mediate viral entry.
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The genes encoding the receptor for subgroup A Rous sarcoma viruses (tva) were recently cloned from both chicken and quail cells (P. Bates, J. A. T. Young, and H. E. Varmus, Cell 74:1043-1051, 1993; J. A. T. Young, P. Bates, and H. E. Varmus, J. Virol. 67:1811-1816, 1993). Previous work suggested
Life-prolongation of Yoshida sarcoma rat under a concomitant treatment of nitromin and cysteine.
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The inhibitory effects of a 4-hydroxypentenal: cysteine adduct against sarcoma 180 cells in mice.
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Fused in sarcoma/translocated in liposarcoma: a multifunctional DNA/RNA binding protein.
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The fused in sarcoma/translocated in liposarcoma (FUS/TLS) gene was initially identified as a component of a fusion pro-oncogene resulting from a chromosomal translocation seen in liposarcomas. FUS/TLS belongs to a sub-family of RNA binding proteins, encoding an N-terminal
Kaposi's sarcoma-associated herpesvirus encodes a viral deubiquitinase.
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Kaposi's sarcoma-associated herpesvirus (KSHV) is etiologically linked to Kaposi's sarcoma, primary effusion lymphomas, and multicentric Castleman's disease. Like other herpesviruses, KSHV can exist in either a lytic or a latent phase during its life cycle. We report that the lytic protein encoded
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